WO2016055375A1 - Réglage du débit de données dans un système de caméras vidéo - Google Patents

Réglage du débit de données dans un système de caméras vidéo Download PDF

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Publication number
WO2016055375A1
WO2016055375A1 PCT/EP2015/072827 EP2015072827W WO2016055375A1 WO 2016055375 A1 WO2016055375 A1 WO 2016055375A1 EP 2015072827 W EP2015072827 W EP 2015072827W WO 2016055375 A1 WO2016055375 A1 WO 2016055375A1
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Prior art keywords
video
data
data rate
ewa
vdsf
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PCT/EP2015/072827
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German (de)
English (en)
Inventor
Thomas HAUENSTEIN
Christopher Saloman
Wolfgang Thieme
Original Assignee
Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
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Priority to JP2017518914A priority Critical patent/JP2017535172A/ja
Priority to EP15778630.2A priority patent/EP3205089A1/fr
Priority to CA2964028A priority patent/CA2964028A1/fr
Priority to KR1020177012460A priority patent/KR20170070107A/ko
Publication of WO2016055375A1 publication Critical patent/WO2016055375A1/fr
Priority to US15/481,730 priority patent/US20170214970A1/en

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Definitions

  • the present invention relates to the setting of data rates in a video camera system, which comprises a plurality of video cameras, which in each case transmit a video data stream via a data network, in particular in real time, to a user terminal which is designed to simultaneously display videos based on the video data streams. It is intended that one of the displayed videos be selectable so that the selected video will be output at a higher quality than the unselected videos.
  • the net data rate is sometimes only a maximum of 32 Mbit / s (802.1 1 a / h / j) [1]. If reserved for the video camera system by these 32Mbps 29Mbps, the maximum number of video cameras would be limited to 2, with a video stream bit rate of 10 Mbps. More video cameras would mean that the data rate would fall below the value of 10 Mbit / s. For example, with 6 video cameras only 4.8 MBit / s would be available for the individual video data streams. From the prior art it is known to transmit video data streams by adapting the data rates over data networks.
  • a method is known in which a video signal is coded with different data rates and stored in the form of several files on a server. Depending on the currently available data rate, blocks of the various types of data are then sent to the user terminal. transferred to different files.
  • this method is not real-time capable.
  • Source [3] it is known from the source [3] to adjust the bit rate, the frame rate and the retryrates in video transmissions in wireless networks.
  • information about the current network bandwidth is obtained and the parameters mentioned are varied on the basis of this information.
  • the source [4] a so-called RTCP rate control method known. This is a feedback mechanism that allows the receiver to inform the sender about packet loss or the like. The transmitter can then adjust transmission parameters.
  • Source [4] disclosed a bit rate manager that estimates network conditions and uses the estimated values to vary the data rate of a video / audio stream.
  • the object of the present invention is to provide an improved concept for setting data rates in a data network of a video camera system comprising a plurality of video cameras.
  • the object is achieved by an adjustment device for setting data rates in a video camera system, which has a plurality of video cameras, each of which is designed to generate a video data stream with an adjustable data rate, wherein the video data streams via a data network to a user terminal - are feasible on the basis of the video streams based on video can be output at the same time, wherein in a steady state operating state of the videos a video is selected, which compared to the unselected
  • the setting device is arranged to generate setting values for setting the data rates of the video data streams and for transmitting the setting values to the video cameras, the generation of the setting values being dependent on information which video is selected, depending on the number of existing video cameras and depending on an available total data rate of the data network.
  • the video cameras may in particular be so-called
  • Webcams act, which have a built-in video encoder.
  • the respective video encoder can generate a compressed video data stream according to the standards H.263 / H.264 / H.265.
  • the data network may be an Internet Protocol-based network.
  • the user terminal may in particular be a computer, for example a personal computer or a tablet computer.
  • the user terminal may comprise a decoder for decoding the video data streams.
  • the videos can be displayed on a common display, especially on a computer screen.
  • the user terminal can also be designed such that the output of the videos takes place by storing and / or forwarding them.
  • the decoder may be configured to control the display by means of a video signal.
  • one video each can be selected, which is output in relation to the unselected videos with a higher quality, that is to say presented, stored and / or forwarded.
  • the higher quality can be achieved by a higher number of displayed pixels, a higher number of colors used and / or a higher frame rate. result.
  • a stationary operating state is understood to mean such an operating state in which no measures for changing the selected video are carried out.
  • the selected video may be determined, for example, by means of a user action on a user interface, in particular on a computer keyboard. To set the selected video, an operator command can then be transmitted from the user interface to the decoder.
  • the user terminal independently determines the selected video. For example, it is possible for the selected video to be re-scheduled periodically or event-driven. This can be done randomly or according to a given scheme.
  • the total available data rate of the data network is the data rate available for the video data streams as a whole. It can be constant if the data network is used exclusively by the video camera system, but it can also vary if the data network also transmits data which is independent of the video camera system.
  • the adjustment device can be designed as hardware and / or as software.
  • the adjusting device can be integrated in particular in the user terminal. However, it can also be provided at a different location. However, what is essential is that they can generate, in particular calculate, and transmit to the video cameras setting values for the data rates of the video data streams.
  • the setting device now makes it possible to adapt the data rates of the video data streams for the situation as required.
  • the data rate of the video stream for the selected video may be set high enough to achieve the desired higher quality of the selected video stream. deos can be guaranteed.
  • the data rates of the video data streams of the unselected videos can be set lower.
  • the selected video can be output with a consistently high quality.
  • the unselected videos can still be output with acceptable quality, for example, allowing them to be used as preview videos, allowing the user to decide which one to use as the selected video.
  • the invention is particularly suitable for real-time capable video camera systems, so that the video camera system is suitable, for example, for traffic monitoring, for monitoring public places as well as for the transmission of sporting events.
  • the setting device is set up such that the transmission of the setting values takes place via the data network.
  • the already existing infrastructure can be used to transmit the setting values, so that the video camera system can be realized in a simple manner.
  • the data network is a WLAN.
  • a WLAN Wireless Local Area Network
  • a WLAN is understood to mean a wireless local area network which is designed, for example, according to a standard of the IEEE 802.1 1 family.
  • the invention allows a variety of video cameras to be used and the selected video to be rendered with high quality.
  • the setting device is set up such that the available total data rate of the data network can be detected over time and the setting values can be automatically adapted given a change in the available overall data rate.
  • the automatic adjustment of the setting values to the available total data rate prevents on the one hand disturbances in the representation of the videos due to an exceeding of the available total data rate, on the other hand it is ensured that the videos are always displayed with the best possible quality.
  • the user terminal can be equipped with a device for monitoring the available total data rate, which receives an analysis signal from the data network which corresponds to the available overall data rate.
  • the adjusting device for synchronizing the video cameras is set up on a common time base. This makes it possible to ensure that the video cameras simultaneously use the setting values provided in each case for a certain period of time so that exceeding the available total data rate when adjusting the setting values can be prevented.
  • the setting device is set up such that the setting values are generated during a change process from a previously selected video to a newly selected video such that in a first phase the data rate of the video data stream for the previously selected video is maintained , the data rate of the video data stream for the newly selected video is increased and the data rates of the video streams for the remaining videos are lowered and in a second phase the data rate of the video data stream for the previously selected video is lowered, the data rate of the video data stream for the newly selected video is maintained and the data rates of the video streams for the remaining videos are increased.
  • the central idea of this aspect of the invention is, starting from a stationary state in the first phase, to increase the data rate of the video data stream for the newly selected video and to set the newly selected video as newly selected video at the user terminal at the end of the first phase.
  • the setting values are then transferred to a new stationary state. This ensures that the newly selected video can be instantly rendered in high quality when switching from the previously selected video to the newly selected video.
  • the reduction of the data rates of the video data streams of the remaining videos, ie those videos which are not involved in the switching process or the switching process, makes it possible to increase the data rates of the video data stream of the newly selected video in the first phase, without thereby reducing the available total data rate by the actually required data rate is exceeded.
  • the adjusting device is set up such that the setting values in the switching operation from the previously selected video to the newly selected video are generated such that in the first phase the data rate of the video data stream for the newly selected video is more than one Is raised and the data rates of the video streams for the remaining videos are lowered in several stages and that in the second phase the data rate of the video data stream for the previously selected video is lowered in several stages, and the data rates of the video data streams for the remaining videos in multiple stages be raised.
  • the quality of the presentation of the other videos is slowly lowered until the switching process and slowly increased again after the switching process. This results in a more pleasing presentation of the other videos for the human eye.
  • the setting device is set up so that the setting values are generated both in the first phase and in the second phase such that the sum of all data rates of the video streams is less than or equal to the available total data rate of the data network. In this way, disturbances in the presentation of the videos, such as picture jumps or still pictures, are avoided.
  • the setting device is set up such that the setting values are generated in such a way that in the first phase the data rates of the video data streams for the other videos are reduced to zero. In this way, the possible data rate for the video selected so far and the newly selected video is maximized, without this exceeding the available total data rate.
  • the setting device is set up such that the setting values for the stationary operating state are generated in such a way that the setting value for the video camera whose video is selected is less than or equal to the halved available total data rate.
  • the setting device is set up in such a way that the setting values for the stationary operating state are generated in such a way that the setting value for the video camera whose video is selected is a maximum data rate of the video stream of the video camera if the maximum data rate is lower or higher is equal to the halved total available data rate.
  • the maximum data rate of the video data stream of the video camera is that data rate which the video camera can supply for maximum technical reasons. This feature ensures that the selected video can be displayed with the best possible quality.
  • the setting device is set up such that the setting values are generated such that in the first phase the data rates of the video data streams for the remaining videos are reduced to a minimum data rate of the video data streams of the video cameras.
  • the minimum data rate of the video data streams is the smallest possible data rate that the respective camera can deliver.
  • the setting device is set up in such a way that the setting values for the stationary operating state are generated such that the setting value for the video camera whose video is selected is less than or equal to the difference between the halved available total data rate and the product is the half minimum data rate of the video streams of the video cameras with a reduced by the number two number of total existing video cameras.
  • n is the total number of existing video cameras:
  • the setting device is set up in such a way that the setting values for the stationary operating mode condition such that the set value for the video camera whose video is selected is a maximum data rate of the video data stream of the video camera if the maximum data rate is less than or equal to the difference between the halved available total data rate and the product of half the minimum data rate of the video data streams
  • Video cameras with a number of two reduced number of total existing video cameras is. This can be used to maximize the quality of the selected video if the rest of the videos are to be freely displayed during a break in interchange without exceeding the available total data rate.
  • the setting device is set up such that the setting values for the stationary operating state are generated such that the setting values for the non-selected video cameras are less than or equal to the quotient of the difference between the available total data rate and the setting value for the video camera whose video is selected and the number of total video cameras reduced by the number one.
  • the unselected videos can be output with the best possible quality without exceeding the available total data rate. If p denotes the data rate of unselected videos:
  • the object is achieved by a video camera system which has a plurality of video cameras which are each designed to generate a video data stream with an adjustable data rate, wherein the video data streams can be fed via a data network to a user terminal on which the video data streams are based.
  • a video is selected which is output with respect to the non-selected videos with a higher quality
  • the video camera system comprising an adjusting device which is used to generate setting values for setting the data rates of the video data streams and for transmitting the setting values to the video cameras, wherein the generation of the setting values is effected in dependence on information which video is selected, depending on the number of video cameras present and on an available overall data rate of the data network.
  • the object is achieved by a method for setting data rates in a video camera system, which comprises a plurality of video cameras, each of which is designed to generate a video data stream with an adjustable data rate, wherein the video data streams can be fed to a user terminal via a data network at which videos based on the video streams are simultaneously outputable, wherein in a steady state operation of the videos a video is output which is higher in quality than the unselected videos, setting values for adjusting the data rates of the video streams by means of an adjuster generated and transmitted to the video cameras, the setting values depending on an information, which video is selected, depending on the number of existing video cameras and depending on an available Legira te of the data network are generated.
  • FIG. 1 shows an exemplary embodiment of an adjusting device in a video camera system in a schematic illustration
  • FIG. 2 shows a first exemplary embodiment of an operating procedure of the setting device with a changeover process from a previously selected video to a newly selected video, in which the remaining videos are briefly switched off;
  • Fig. 3 shows a second embodiment of an operation of the adjustment with a change process from a previously selected video to a newly selected video in which the remaining videos are displayed without interruption.
  • a setting device 1 for setting data rates DRa-DRf (see FIGS. 2 and 3) in a video camera system 2, which has a plurality of video cameras 3a-3f, each of which is designed to generate a video data stream VDSa-VDSf with an adjustable data rate DRa-DRf, wherein the video data streams VDSa-VDSf can be supplied to a user terminal 5 via a data network 4 videos Va-Vf based on the video data streams VDSa-VDSf can be output at the same time, wherein in a stationary operating state SBZ1; SBZ2 from the videos Va-Vf a video Va; Vb is selected, which is opposite to the unselected videos Vb-Vf; Va, Vc-Vf having a higher quality, the setting device 1 for generating setting values EWa-EWf for setting the data rates DRa-DRf of the video data streams VDSa-VDSf and for transmitting the setting values EWa-EWf to the video cameras 3a 3
  • the video cameras 3a-3f may in particular be so-called webcams 3a-3f, which have an integrated video encoder.
  • the respective video encoder can generate a compressed video data stream VDSa-VDSf according to the standards H.263 / H.264 / H.265.
  • the data network 4 may be an Internet Protocol-based network 4.
  • the user terminal 5 may in particular be a computer 5, for example a personal computer or a tablet computer.
  • the user terminal 5 may include a decoder 6 for decoding the video data streams VDSa-VDSf.
  • the videos Va -Vf can be displayed on a common display 7, in particular on a computer screen 7.
  • the user terminal 5 can also be designed such that the output of the videos Va-Vf takes place by storing and / or forwarding them.
  • the decoding device 6 can be designed such that it controls the display 7 by means of a video signal VSIG.
  • a video Va can be selected in each case in a steady-state operating state SBZ1, which is output with a higher quality than the non-selected videos Vb-Vf, ie displayed, stored and / or forwarded.
  • FIG. 1 shows a stationary operating state SBZ1 in which the video Va of the video camera 3a is selected.
  • the higher quality can result from a higher number of displayed pixels, a higher number of colors used and / or a higher refresh rate.
  • SBZ1; SBZ2 is understood to be such an operating state in which no measures for changing the selected video Va are performed.
  • the selected video Va can be defined, for example, by means of a user action BB on a user interface 8, in particular on a computer keyboard 8.
  • an operating command BB can then be transmitted from the user interface 8 to the decoder 6.
  • the user terminal 5 autonomously determines the selected video Va. It is thus possible, for example, for the selected video Va to be determined periodically or event-controlled. This can be done randomly or according to a given scheme.
  • the available total data rate GDR of the data network 4 is the data rate which is available in total for the video data streams VDSa-VDSf. It can be constant if the data network 4 is exclusively from The video camera system 2 is used, but it can also vary when data is transmitted over the data network 4, which are independent of the video camera system 2.
  • the adjusting device 1 can be designed as hardware and / or as software.
  • the adjusting device 1 can be integrated in particular in the user terminal 5. However, it can also be provided at a different location. However, it is essential that they generate setting values EWa-EWf for the data rates DRa-DRf of the video data streams VDSa-VDSf, in particular they can be calculated and transmitted to the video cameras 3a-3f.
  • the setting device 1 now makes it possible to adapt the data rates DRa-DRf of the video data streams VDSa-VDSf for the videos Va-Vf as appropriate to the situation.
  • the data rate DRa of the video data stream VDSa for the selected video Va can be set so high that the desired higher quality of the selected video Va can be ensured.
  • the data rates DRb-DRf of the video data streams of the unselected videos Vb-Vf can be set lower.
  • the setting values EWa-EWf in dependence on an information IN, which video Va-Vf is selected, depending on the number of existing video cameras AZ and depending on the available total data rate GRD of the data network 4, the available total data rate GDR of the data network 4 can be used very efficiently.
  • the information IN, which video Va-Vf is selected, and the number AZ of the existing video cameras 3a-3f can be transmitted from the decoder 6 to the setting device 1, for example.
  • the number AZ of the video cameras 3a-3f given a total data rate GDR of the network 4 can be significantly increased compared to cases in which all video data streams have the same set data rate.
  • the selected video Va can be output with a consistently high quality.
  • the unselected videos Vb-Vf can still be output with acceptable quality, for example, allowing them to be used as preview videos, allowing the user to decide which video Va they want to use as the selected video.
  • the invention is particularly suitable for real-time capable video camera systems 2, so that the video camera system 2 is suitable, for example, for traffic monitoring, for monitoring public places as well as for transmitting sports events.
  • the Einstellvorrich- device 1 is set up so that the transmission of the set values EWa-EWf via the data network 4 takes place.
  • the already existing infrastructure can be used to transmit the setting values EWa-EWf, so that the video camera system 2 can be realized in a simple manner.
  • the data network 4 is a WLAN 4.
  • a WLAN 4 Wireless Local Area Network
  • a WLAN 4 Wireless Local Area Network
  • a WLAN 4 is understood to be a wireless local area network 4 which is designed, for example, according to a standard of the IEEE 802.1 1 family.
  • the setting device 1 is set up such that the available total data rate GDR of the data network 4 can be detected over time and the setting values EWa-EWf included a change in the available total data rate GDR are automatically customizable.
  • the user terminal 5 can be equipped with a device 9 for monitoring the available total data rate GDR, which receives from the data network 4 an analysis signal ANS which corresponds to the available total data rate GDR.
  • the adjusting device 1 for synchronizing the video cameras 3a-3f is set up on a common time base. In this way it can be ensured that the video cameras 3a-3f use the set values EWa-EWf provided for a specific period at the same time, so that an exceeding of the available total data rate GDR can be prevented when the setting values EWa-EWf are adjusted.
  • the object is achieved by a video camera system 2, which has a plurality of video cameras 3a-3f, each of which is designed to generate a video data stream VDSa-VDSf with an adjustable data rate DRa-DRf, the video data streams VDSa-VDSf via a Data network 4 can be fed to a user terminal 5, on the basis of the video data streams VDSa-VDSf videos Va- Vf can be output at the same time, wherein in a steady state operating state SBZ1; SBZ2 from the videos Va-Vf a VideoVa; Vb is selected, which is opposite to the unselected videos Vb-Vf; Va, Vc-Vf is output at a higher quality, wherein the video camera system 2 comprises an adjusting device 1, which for generating setting values EWa-EWf for setting the data rates DRa-DRf of the video data streams VDSa-VDSf and for transmitting the set values EWa-EWf the video cameras 3a-3f wherein the generation of the
  • the object is achieved by a method for setting data rates in a video camera system 2, which comprises a plurality of video cameras 3a-3b, each of which is designed to generate a video data stream VDSa-VDSf with an adjustable data rate DRa-DRf, the video data streams VDSa-VDSf can be supplied to a user terminal 5 via a data network 4, at which videosVa-Vf based on the video data streams VDSa-VDSf can be output at the same time, wherein in a stationary operating state SBZ1; SBZ2 from the videos Va- Vf a video Va; Vb is selected, which is opposite to the unselected videos Vb-Vf; Va, Vc-Vf is outputted with a higher quality, wherein by means of a setting device 1 set values EWa-EWf for setting the data rates DRa-DRf of the video data streams VDSa-VDSf generated and transmitted to the video cameras 3a-3f, wherein the set values EWa-EWf in response to
  • the object is achieved by a computer program for carrying out a method according to the invention, when it is executed on a computer 5 or processor.
  • Fig. 2 shows a first embodiment of an operation of the adjustment device 1 with a change operation WV from a previously selected video Va to a newly selected video Vb, in which the remaining videos Vc-Vf are switched off for a short time.
  • the adjusting device 1 Before the change process WV the adjusting device 1 is operated in a first stationary operating state SBZ1 and after the change process WV in a second stationary operating state SBZ2.
  • the setting device 1 is set up such that the setting values EWa-EWf are generated in a changeover operation WV from a previously selected video Va to a newly selected video Vb such that the data rate DRa in a first phase PH1 of the video data stream VDSa for the previously selected video Va, the data rate DRb of the video data stream VDSb for the newly selected video Vb is increased, and the data rates DRc-DRf of the video data streams VDSc-VDSf for the remaining videos Vc-Vf are lowered and in a second phase PH2, the data rate DRa of the video data stream VDSa for the previously selected video Va is lowered, the data rate DRb of the video data stream VDSb for the newly selected video Vb is maintained and the data rates DRc-DRf of the video data streams VDSc-VDSf for the remaining videos Vc - Vf raised.
  • the central idea of this aspect of the invention is, starting from a stationary state SBZ1 in the first phase PH1, to increase the data rate DRb of the video data stream VDSb for the newly selected video Vb and at the end of the first phase PH1 the newly selected video Vb as the newly selected video VB at the user terminal 5 to adjust.
  • the setting values EWa-EWf are then transferred to a new stationary state SBZ2. In this way it is ensured that the newly selected video Vb, when switching from the previous selected video Va to the newly selected video Vb, can be displayed immediately in high quality.
  • the lowering of the data rates DRc-DRf of the video data streams VDSc-VDSf of the remaining videos Vc-Vf, ie those videos Vc-Vf which are not involved in the switching process WV or the switching process, makes it possible to set the data rate DRb of the video data stream VDSb of the newly selected video Vb in the first phase to increase PH1, without thereby affecting the available total data rate GDR is exceeded by the actual required data rate VDR.
  • the lowering of the data rate DRa of the previously selected video Va then makes it possible, in the second phase PH1, to increase the data rates DRc-DRf of the video data streams VDSc-VDSf of the remaining videos Vc-Vf so that they can be displayed with the best possible quality.
  • the adjusting device 1 is set up such that the setting values EWa-EWf are generated both in the first phase PH1 and in the second phase PH2 such that the sum of all data rates DRa-DRf of the video streams VDSa-VDSf is smaller or equal to the available total data rate GDR of the data network 4.
  • the sum of all data rates DRa-DRf of the video streams VDSa-VDSf corresponds to the actually required data rate VDR. In this way disturbances in the presentation of the videos Va-Vf, such as picture jumps or still pictures, are avoided.
  • the adjusting device 1 is set up such that the setting values EWa-EWf are generated such that in the first phase PH1 the data rates DRc-DRf of the video data streams VDSc-VDSf for the remaining videos Vc-Vf are lowered to zero , In this way, the possible data rate DRa for the previously selected video Va and the possible data rate DRb is maximized for the newly selected video Vb, without exceeding the available total data rate GDR.
  • the adjusting device 1 is set up such that the setting values EWa-EWf for the stationary operating state SBZ1; SBZ2 are generated such that the set value EWa; EWb for the video camera 3a; 3b whose video Va; Vb is selected to be less than or equal to the halved total available data rate GDR.
  • h is the data rate DRa of the video data stream VDSa for the selected video Va and D is the available total data rate GDR of the data network 4, then in this case: h ⁇ - D.
  • the total data rate is GDR
  • the setting device 1 is set up such that the setting values EWa-EWf for the stationary operating state SBZ1; SBZ2 are generated such that the set value EWa; EWb for the video camera 3a; 3b, whose video Va; Vb is selected, a maximum data rate of the video stream VDSa; VDSb of the video camera 3a; 3b is if the maximum data rate is less than or equal to the halved total available data rate GDR.
  • the maximum data rate of the video data stream of the video camera is that data rate which the video camera can supply for maximum technical reasons. This feature ensures that the selected video can be displayed with the best possible quality. If h mgx is the maximum data rate of the video stream of the video camera, then: "max 2 , L max -
  • FIG 3 shows a second exemplary embodiment of an operating sequence of the setting device 1 with a changeover process WV from a previously selected video Va to a newly selected video Vb in which the remaining videos Vc-Vf are displayed without interruption.
  • the setting device 1 is set up such that the setting values EWa-EWf are generated in such a way that in the first phase PH1 the data rates DRc-DRf of the video data streams VDSc-VDSf for the remaining videos Vc-Vf are set to one minimum data rate of the video data streams VDSc-VDSf of the video cameras 3c-3f are lowered.
  • the minimum data rate of the video data streams VDSa-VDSC is the smallest possible data rate which the respective camera 3a-3f can deliver.
  • the data rate of the video cameras 3a-3f is 250 kbps.
  • the adjusting device 1 is set up such that the setting values EWa-EWf for the stationary operating state SBZ1; SBZ2 are generated such that the set value EWa; EWb for the video camera 3a; 3b, whose video Va; Vb is chosen to be less than or equal to the difference between the halved total available data rate GDR and the product of the half minimum data rate of the video streams of the video cameras 3a; 3b with a number two reduced number AZ of the total existing video cameras 3a-3f.
  • n is the number AZ of the total existing video cameras 3a-3f:
  • the total data rate is GDR
  • the setting device 1 is set up such that the setting values EWa-EWf for the stationary operating state SBZ1; SBZ2 are generated such that the set value EWa; EWb for the video camera 3a; 3b whose video is selected Va; Vb, a maximum data rate of the video data stream VDSa; VDSb of the video camera 3a; 3b is, if the maximum data rate is less than or equal to the difference between the halved total available data rate GDR and the product is the half minimum data rate of the video data streams VDSa-VDSf of the video cameras 3a-3f with a number two reduced number AZ of the total existing video cameras 3a, 3f.
  • This will maximize the quality of the selected video if the remaining videos are to be freely displayed during a break in interchange without exceeding the available total data rate.
  • the adjusting device 1 is set up such that the setting values EWa-EWf for the stationary operating state SBZ1; SBZ2 are generated such that the setting values for the non-selected video cameras 3b-3f; 3a, 3c-3f less than or equal to the quotient of the difference between the available total data rate GDR and the set value EWa; EWb for the video camera 3a; 3b, whose video Va; Vb is selected and is the number one reduced number AZ of the total existing video cameras 3a-3f.
  • the videos Vb-Vf not selected in the first steady-state operating state SBZ1 or the unselected videos Va, Vc-Vf in the second stationary operating state SBZ2 can be output with the best possible quality without exceeding the available total data rate. If p denotes the data rate of unselected videos:
  • the videos not selected in the first stationary operating state SBZ1 are obtained Vb-Vf or for the data rates DRa, DRv-DRf of the non-selected in the second stationary operating state SBZ2 videos Va, Vc-Vf a value of 3 Mbit / s.
  • the setting device 1 is set up in such a way that the setting values EWa-EWf in the changing operation WV are generated from the previously selected video Va to the newly selected video Vb in such a way that the data rate DRb in the first phase PH1 of the video data stream VDSb for the newly selected video Vb is increased in several stages and the data rates DRc-DRf of the video data streams VDSc-VDSf for the remaining videos Vc-Vf are lowered in several stages and that in the second phase PH2 the data rate DRa of the video data stream VDSa for the previously selected video Va is lowered in several stages, and the data rates DRc-DRf of the video data streams VDSc-VDSf for the remaining videos Vc-Vf are raised in several stages.
  • the quality of the representation of the remaining videos Vc-Vf is slowly lowered until the switching process and slowly increased again after the switching process. This results in a more pleasant representation of the remaining videos Vc
  • a prerequisite for the live system are video encoders on the camera side, which can dynamically change the data rate of the video streams produced between several definable values. This can be done by changing the quality parameters, the resolution or other parameters (eg longer GOP structures for lower bit rate).
  • the cameras may be synchronized to a common time base. This can be realized by standardized methods, such as the Network Time Protocol [6].
  • a maximum data rate for video transmissions may be specified as D.
  • the minimum data rate for the preview strands may be p m / n -. This is defined by the specification of the encoder, the values are dependent gig the encoder level and the resolution.
  • the maximum data rate h max available at the front of the encoder can be known. Depending on the resolution and level, this can be up to 960Mbps with H264 [7].
  • the overall system comprises n> 2 cameras. First, the required parameters for the standard preview data rate p and the data rate of the main stream h can be calculated.
  • camera 3a which is currently to send the main stream, starts to send video data at the data rate h to the receiver. All other n - 1 cameras also send to the receiver 5 at a data rate p. If the main current is now to be switched to another camera 3b-3f, this can be signaled to all cameras using a standard broadcasting process.
  • the signal contains a switching time tu for which, depending on the current time ta and the round trip time r, the following must apply: tu> t a +.
  • all n-2 cameras except 3a and 3b start reducing their data rate from p to p min . With an encoder-dependent delay, camera 3b continuously increases the data rate from p to h.
  • the adaptation of the data rates takes place here by a reconfiguration of the video encoder used. Whether a bit rate adjustment requires multiple reconfigurations or only one can depend on the encoder used.
  • the receiver can switch the main current from 3a to 3b. If the switchover takes place, another confirmation is sent to all cameras. As a consequence camera 3a can lower its data rate up to the value p, while all other cameras, with the exception of 3b, increase their data rate again up to the value p.
  • This procedure ensures that the maximum available data rate D is not exceeded, while at the same time no quality losses occur when switching camera streams.
  • the method allows to use only a relatively low data rate even with a larger number of cameras. This increases the scalability of the system, while at the same time, the preview teams are also transmitted in the best possible quality, unless a switchover is taking place.
  • Fig. 2 the switching operation is illustrated again using the data rates of the individual cameras.
  • the 3c-3f cameras gradually lower their data rate.
  • camera 3b increases its data rate.
  • the switching occurs and camera 3b is used as the mainstream.
  • camera 3a gradually lowers its data rate while cameras 3c-3f raise their data rates again with a time unit delay.
  • the dynamic bit rate adaptation on the encoder during a switching process increases the scalability of the overall system. If all streams were sent at the same data rate, either there could only be a smaller number of cameras in the system, or all cameras would have to transmit at a low data rate. A lower number of cameras drastically limits the system's capabilities, while slower data rates result in unsatisfactory output quality.
  • the proposed approach keeps the data rate of the output stream at a consistently high level, while the preview teams can also be displayed in acceptable quality most of the time. Only during a switching process does the user have to accept losses in the quality of the preview teams.

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Abstract

L'invention concerne un dispositif de réglage de débits de données dans un système de caméras vidéo (2) qui comporte une pluralité de caméras vidéo (3a-3f) qui sont chacune configurées pour générer un flux de données vidéo (VDSa-VDSf) à un débit de données réglable (DRa-DRf) ; les débits de données vidéo (VDSa-VDSf) peuvent être amenés via un réseau de données (4) à un terminal d'utilisateur auquel des vidéos (Va-Vf) reposant sur les flux de données vidéo (VDSa- VDSf) peuvent être délivrées en même temps ; dans un état de fonctionnement stationnaire (SBZ1 ; SBZ2) des vidéos (Va-Vf), une vidéo (Va ; Vb) est sélectionnée qui est délivrée avec une meilleure qualité que celle des vidéos non-sélectionnée (Vb-Vf ; Va, Vc-Vf) ; le dispositif de réglage (1) est adapté pour générer des valeurs de réglage (EWa-EWf) pour régler les débits de données (DRa-DRf) des flux de données vidéo (VDSa-VDSf) et pour transmettre les valeurs de réglage (EWa-EWf) aux caméras vidéo (3a-3f) ; la génération des valeurs de réglage (EWa-EWf) est effectuée en fonction d'une information (IN), laquelle vidéo (Va ; Vb) est choisie en fonction du nombre (Z) de caméras vidéo (3a-3f) présentes et en fonction d'un débit de données total disponible (GDR) du réseau de données (4).
PCT/EP2015/072827 2014-10-08 2015-10-02 Réglage du débit de données dans un système de caméras vidéo WO2016055375A1 (fr)

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JP2017518914A JP2017535172A (ja) 2014-10-08 2015-10-02 ビデオカメラシステムにおけるデータレートの設定
EP15778630.2A EP3205089A1 (fr) 2014-10-08 2015-10-02 Réglage du débit de données dans un système de caméras vidéo
CA2964028A CA2964028A1 (fr) 2014-10-08 2015-10-02 Reglage du debit de donnees dans un systeme de cameras video
KR1020177012460A KR20170070107A (ko) 2014-10-08 2015-10-02 비디오 카메라 시스템에서 데이터 레이트들의 설정
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11108993B2 (en) 2016-12-19 2021-08-31 Telicomm City Connect, Ltd. Predictive network management for real-time video with varying video and network conditions

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11722706B2 (en) * 2019-12-23 2023-08-08 Dish Network Technologies India Private Limited Automated optimization of video settings in a digital video production system having multiple video capture devices

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005041580A1 (fr) * 2003-10-16 2005-05-06 Deutsche Telekom Ag Dispositif de surveillance comprenant des caméras vidéo
US20100158101A1 (en) 2008-12-22 2010-06-24 Chung-Ping Wu Bit rate stream switching
US20110158313A1 (en) * 2009-12-28 2011-06-30 Sony Corporation Reception apparatus, reception method, and program
EP2171927B1 (fr) 2007-07-10 2013-02-27 Bytemobile, Inc. Gestion adaptative d'un débit binaire pour transmission multimédia sur des réseaux de paquets
US8451910B1 (en) 2006-07-13 2013-05-28 Logitech Europe S.A. Wireless multimedia device with real time adjustment of packet retry function and bit rate modulation

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5625410A (en) * 1993-04-21 1997-04-29 Kinywa Washino Video monitoring and conferencing system
US20110058036A1 (en) * 2000-11-17 2011-03-10 E-Watch, Inc. Bandwidth management and control
US7225267B2 (en) * 2003-01-27 2007-05-29 Microsoft Corporation Reactive bandwidth control for streaming data
US7587454B2 (en) * 2004-12-08 2009-09-08 Nice Systems Ltd. Video streaming parameter optimization and QoS
US8879857B2 (en) * 2005-09-27 2014-11-04 Qualcomm Incorporated Redundant data encoding methods and device
US8922659B2 (en) * 2008-06-03 2014-12-30 Thales Dynamically reconfigurable intelligent video surveillance system
CN101686383B (zh) * 2008-09-23 2013-05-01 Utc消防和保安美国有限公司 通过网络传输媒体的方法及系统
US8352992B1 (en) * 2008-10-09 2013-01-08 Hewlett-Packard Development Company, L.P. Wireless media streaming
KR101023755B1 (ko) * 2009-06-16 2011-03-21 포항공과대학교 산학협력단 Ｉｐｔｖ 서비스 제공을 위한 채널 제어 방법 및 장치
US20110015831A1 (en) * 2009-07-17 2011-01-20 Loup Electronics, Inc. Application rate system for a farm implement
JP2011029969A (ja) * 2009-07-27 2011-02-10 Mitsubishi Electric Corp 映像監視表示装置および映像監視システム
US20120314127A1 (en) * 2011-06-09 2012-12-13 Inayat Syed Provisioning network resources responsive to video requirements of user equipment nodes
JP2013026787A (ja) * 2011-07-20 2013-02-04 Sony Corp 送信装置、受信システム、通信システム、送信方法、受信方法、及びプログラム
WO2014061181A1 (fr) * 2012-10-18 2014-04-24 日本電気株式会社 Système de caméras

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005041580A1 (fr) * 2003-10-16 2005-05-06 Deutsche Telekom Ag Dispositif de surveillance comprenant des caméras vidéo
US8451910B1 (en) 2006-07-13 2013-05-28 Logitech Europe S.A. Wireless multimedia device with real time adjustment of packet retry function and bit rate modulation
EP2171927B1 (fr) 2007-07-10 2013-02-27 Bytemobile, Inc. Gestion adaptative d'un débit binaire pour transmission multimédia sur des réseaux de paquets
US20100158101A1 (en) 2008-12-22 2010-06-24 Chung-Ping Wu Bit rate stream switching
US20110158313A1 (en) * 2009-12-28 2011-06-30 Sony Corporation Reception apparatus, reception method, and program

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11108993B2 (en) 2016-12-19 2021-08-31 Telicomm City Connect, Ltd. Predictive network management for real-time video with varying video and network conditions

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US20170214970A1 (en) 2017-07-27
KR20170070107A (ko) 2017-06-21
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EP3205089A1 (fr) 2017-08-16
CA2964028A1 (fr) 2016-04-14

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